DRBD splited

D

docent

Renowned Member
Jul 23, 2009
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1
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Hi everybody!

I have the next trouble. Sometime (I don't know when) the DRBD on my cluster splited. And now DRBD is looking like StandAlone on both nodes:
Code: 
cl8:~# cat /proc/drbd
version: 8.3.2 (api:88/proto:86-90)
GIT-hash: dd7985327f146f33b86d4bff5ca8c94234ce840e build by root@oahu, 2009-09-28 16:27:31
 0: cs: ro:Primary/Unknown ds:UpToDate/DUnknown   r----
    ns:7796056 nr:19049180 dw:28454304 dr:1300228 al:4717 bm:671 lo:0 pe:0 ua:0 ap:0 ep:1 wo:b oos:1324028
Code: 
cl9:~# cat /proc/drbd
version: 8.3.2 (api:88/proto:86-90)
GIT-hash: dd7985327f146f33b86d4bff5ca8c94234ce840e build by root@oahu, 2009-09-28 16:27:31
 0: cs:StandAlone ro:Primary/Unknown ds:UpToDate/DUnknown   r----
    ns:19065524 nr:10188604 dw:29785584 dr:2664612 al:31899 bm:1606 lo:0 pe:0 ua:0 ap:0 ep:1 wo:b oos:965720
PVE dosn't see this trouble and all VMs are continuing to work fine on both nodes.
 
I posted this message here because you should consider this situation in the future.
 
docent said:
I posted this message here because you should consider this situation in the future.
Click to expand...

Both devices are read only, so nothing bad can happen (you will get an error message) - how do you think I should 'consider' that situation?
 
dietmar said:
Both devices are read only, so nothing bad can happen (you will get an error message) - how do you think I should 'consider' that situation?
Click to expand...
This is so, but now I have to stop all virtual machines on one node, transfer them to another (about 1TB), and then restore the DRBD.
I do not know how long the cluster is in a vulnerable state. Cluster manager must show that there is a problem in storage.

May be DRBD volumes for VMs on top of LVM would be better?
 
docent said:
I do not know how long the cluster is in a vulnerable state. Cluster manager must show that there is a problem in storage.
Click to expand...

The question is why DRBD goes offline? - that should not happen at all.

docent said:
May be DRBD volumes for VMs on top of LVM would be better?
Click to expand...

Why?
 
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